| 摘要 |
The invention relates to an ultrasonic transducer (1) with a cylinder-shaped housing (2) having a plane bottom (3), which housing encases a piezo-electric ceramic disc (4) bearing on the housing bottom (3). Said bottom (3) forms a first electrical connection to said disc (4), with a spring (5) bearing on the disc (4). Opposite said disc (4) said spring (5) has contact with an electrically conducting means (7), thus forming a second electrical connection between the disc (4) and the electrically conducting means (7). In a non-connected state, the spring (5) presses the conducting means (7) to bearing against a locking means (8) with contact to the housing (2), thus short-circuiting the disc (4). At connection of a cable (9), the conducting means (7) is pressed free of the locking means (8), thereby forming an electrical connection between the cable (9) and the disc (4). Thus the electrical connection to the piezo-electric ceramic disc (4) takes place without soldering and the ultrasonic transducer (1) is short-circuited when the cable is removed. |
